To:
Mats Dufberg <dufberg@nic-se.se>
cc:
<dnsop@cafax.se>
From:
Sam Trenholme <namedroppers@artemas.reachin.com>
Date:
Sun, 22 Apr 2001 00:09:03 -0700 (PDT)
In-Reply-To:
<Pine.BSF.4.30.0104211713550.1551-100000@spider.nic-se.se>
Sender:
owner-dnsop@cafax.se
Subject:
Re: Tips for DNS zone administration
> > * If possible, make the TTLs for the NS records for your domain as > > long as possible (604800 seconds--one week, is a good number). > > This will speed up accesses to your domain, since caches will not > > have to query the root servers as often before querying your name > > servers. > > If you do remember to set it down well before any changes... I think that > TTL's over 1-2 days should be well motivated before use. I can think of two reasons for this thinking: * Care needs to be taken to lower the TTL before changing any information. * Some nameservers do not have a cap on the number of records they store in their cache. - Sam